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| author | Nathan Bossart <nathan@postgresql.org> | 2025-12-15 14:27:16 -0600 |
|---|---|---|
| committer | Nathan Bossart <nathan@postgresql.org> | 2025-12-15 14:27:16 -0600 |
| commit | 48d4a1423d2e92d10077365532d92e059ba2eb2e (patch) | |
| tree | deb5eb18eaef14743bff7889a3f3112cda58d5c6 /src/backend/storage | |
| parent | 64bf53dd61ea3224020bb340725a4df6a27bc974 (diff) | |
Allow passing a pointer to GetNamedDSMSegment()'s init callback.
This commit adds a new "void *arg" parameter to
GetNamedDSMSegment() that is passed to the initialization callback
function. This is useful for reusing an initialization callback
function for multiple DSM segments.
Author: Zsolt Parragi <zsolt.parragi@percona.com>
Reviewed-by: Sami Imseih <samimseih@gmail.com>
Discussion: https://postgr.es/m/CAN4CZFMjh8TrT9ZhWgjVTzBDkYZi2a84BnZ8bM%2BfLPuq7Cirzg%40mail.gmail.com
Diffstat (limited to 'src/backend/storage')
| -rw-r--r-- | src/backend/storage/ipc/dsm_registry.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/backend/storage/ipc/dsm_registry.c b/src/backend/storage/ipc/dsm_registry.c index 66240318e83..072f9399969 100644 --- a/src/backend/storage/ipc/dsm_registry.c +++ b/src/backend/storage/ipc/dsm_registry.c @@ -180,11 +180,13 @@ init_dsm_registry(void) * Initialize or attach a named DSM segment. * * This routine returns the address of the segment. init_callback is called to - * initialize the segment when it is first created. + * initialize the segment when it is first created. 'arg' is passed through to + * the initialization callback function. */ void * GetNamedDSMSegment(const char *name, size_t size, - void (*init_callback) (void *ptr), bool *found) + void (*init_callback) (void *ptr, void *arg), + bool *found, void *arg) { DSMRegistryEntry *entry; MemoryContext oldcontext; @@ -235,7 +237,7 @@ GetNamedDSMSegment(const char *name, size_t size, seg = dsm_create(size, 0); if (init_callback) - (*init_callback) (dsm_segment_address(seg)); + (*init_callback) (dsm_segment_address(seg), arg); dsm_pin_segment(seg); dsm_pin_mapping(seg); |